Cited by 214Fatty Acid Research and HealthTreatment of Major DepressionNutrition and Health Studies

The efficacy and safety of nutrient supplements in the treatment of mental disorders: a meta-review of meta-analyses of randomized controlled trials

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Firth, Joseph, Teasdale, Scott B., Allott, Kelly, Siskind, Dan, Marx, Wolfgang, Cotter, Jack, Veronese, Nicola, Schuch, Felipe +7 more·2019·World Psychiatry

Abstract

The role of nutrition in mental health is becoming increasingly acknowledged. Along with dietary intake, nutrition can also be obtained from "nutrient supplements", such as polyunsaturated fatty acids (PUFAs), vitamins, minerals, antioxidants, amino acids and pre/probiotic supplements. Recently, a large number of meta-analyses have emerged examining nutrient supplements in the treatment of mental disorders. To produce a meta-review of this top-tier evidence, we identified, synthesized and appraised all meta-analyses of randomized controlled trials (RCTs) reporting on the efficacy and safety of nutrient supplements in common and severe mental disorders. Our systematic search identified 33 meta-analyses of placebo-controlled RCTs, with primary analyses including outcome data from 10,951 individuals. The strongest evidence was found for PUFAs (particularly as eicosapentaenoic acid) as an adjunctive treatment for depression. More nascent evidence suggested that PUFAs may also be beneficial for attention-deficit/hyperactivity disorder, whereas there was no evidence for schizophrenia. Folate-based supplements were widely researched as adjunctive treatments for depression and schizophrenia, with positive effects from RCTs of high-dose methylfolate in major depressive disorder. There was emergent evidence for N-acetylcysteine as a useful adjunctive treatment in mood disorders and schizophrenia. All nutrient supplements had good safety profiles, with no evidence of serious adverse effects or contraindications with psychiatric medications. In conclusion, clinicians should be informed of the nutrient supplements with established efficacy for certain conditions (such as eicosapentaenoic acid in depression), but also made aware of those currently lacking evidentiary support. Future research should aim to determine which individuals may benefit most from evidence-based supplements, to further elucidate the underlying mechanisms.

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  • ω-3 fatty acids have benefits for central functioning ranging from enhanced memory, mood, attention, and cognitive performance to a reduced risk of developing depression and regulation of stress sensitivity.

    “The benefits of ω-3 (n-3) fatty acids for central functioning range from enhanced memory, mood, attention, and cognitive performance to a reduced risk of developing depression and regulation of stress sensitivity (131-138).”

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Research works printed but not linked: 1

  1. Sarris J, Logan AC, Akbaraly TN et al. International Society for Nutritional Psychiatry Research consensus position statement: nutritional medicine in modern psychiatry. World Psychiatry 2015;14:370-1.

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Authors
Firth, J., Teasdale, S. B., Allott, K., Siskind, D., Marx, W., Cotter, J., Veronese, N., Schuch, F., Smith, L., Solmi, M., Carvalho, A. F., Vancampfort, D., Berk, M., Stubbs, B., & Sarris, J.
Affiliations
  • The University of Melbourne (AU)
  • UNSW Sydney (AU)
  • The University of Queensland (AU)
  • Barwon Health (AU)
  • Cambridge Cognition (United Kingdom) (GB)
  • National Research Council (IT)
  • Universidade Federal de Santa Maria (BR)
  • Anglia Ruskin University (GB)
  • University of Padua (IT)
  • Centre for Addiction and Mental Health Toronto ON Canada
  • KU Leuven (BE)
  • King's College London (GB)
Venue
World Psychiatry
Publisher
Wiley
Published
2019-09-09
Volume
18
Issue
3
Pages
308-324
ISSN
  • 1723-8617 (ISSN-L)
  • 2051-5545
OpenAlex
W2971872318
Cited by
214
References
114
Citations by year
2026: 19 · 2025: 31 · 2024: 22 · 2023: 24 · 2022: 26 · 2021: 38 · 2020: 44 · 2019: 8 · 2018: 1
FWCI
22.03
Type
journal article
Language
en
Open access
Locations
  • World Psychiatry (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Lirias (submittedVersion, other-oa)
  • Anglia Ruskin Research Online (Anglia Ruskin University) (submittedVersion)
  • Own your potential (DEAKIN) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Figshare (submittedVersion, cc-by-nc-nd)
  • Nova Science Publishers (Nova Science Publishers, Inc.) (submittedVersion, other-oa)
  • Research Portal (King's College London) (submittedVersion, other-oa)
  • Research Explorer (The University of Manchester) (submittedVersion, other-oa)
  • Padua Research Archive (University of Padova) (submittedVersion)
Funders
  • National Institute for Health and Care Research (APP1125000, ICA-CL-2017-03-001, NIHR-INF-0685)
  • Deakin University
  • Medical Research Council
  • National Health and Medical Research Council (1111136, 1156072, 1141207, 1125000, 1059660)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutrition and Health Studies
Keywords
dietary supplements, mental illness, polyunsaturated fatty acids, eicosapentaenoic acid, depression, attention deficit hyperactivity disorder, schizophrenia, folic acid, methylfolate, N-acetylcysteine, antioxidants, adjunctive therapy, supplement safety, diet and mental health

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